82009687 has 2 divisors, whose sum is σ = 82009688. Its totient is φ = 82009686.

The previous prime is 82009679. The next prime is 82009693. The reversal of 82009687 is 78690028.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82009687 - 2³ = 82009679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82009657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41004843 + 41004844.

It is an arithmetic number, because the mean of its divisors is an integer number (41004844).

Almost surely, 2^82009687 is an apocalyptic number.

82009687 is a deficient number, since it is larger than the sum of its proper divisors (1).

82009687 is an equidigital number, since it uses as much as digits as its factorization.

82009687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 82009687 is about 9055.9199974381. The cubic root of 82009687 is about 434.4652556236.

The spelling of 82009687 in words is "eighty-two million, nine thousand, six hundred eighty-seven".